Modified bentonite adsorption of organic pollutants of dye wastewater

Zhi-bin, Huang; Li, Yuzhen; Chen, Wenjun; Shi, Jianhui; Zhang, Ning; Wang, Xiaojin; Li, Zhen; Gao, Lizhen; Zhang, Yuxin

doi:10.1016/j.matchemphys.2017.09.028

Cited by 309 publications

(130 citation statements)

References 57 publications

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“…In particular, organic pollution has become an alarming environmental issue, especially organic dye solutions . These organics inevitably aggravate the water scarcity crises and also cause public health problems . Therefore, it is imperative to remove the organics from wastewater.…”

Section: Introductionmentioning

confidence: 99%

Self‐assembly of α‐MoO₃ flower as a highly effective organics adsorbent for water purification

Zhang

Liang

et al. 2018

J Am Ceram Soc

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We report α‐MoO3 flowers as a highly effective organics adsorbent for the first time. With α‐MoO3 microfibers (MFs), α‐MoO3 flowers uniformly self‐assemble on a carbon cloth, serving as a great organics scavenger. They not only provide a high specific surface area but also possess van der Waals force, both of which guarantee a high adsorption efficiency for multiple organics. Nearly 100% of Rhodamine B (RhB), methylene blue (MB), and crystal violet (CV) are rapidly adsorbed while flowing through the designed α‐MoO3 flower‐based filtration device. Even after five recycling times, its high adsorption efficiency toward RhB remains unaffected. The adsorption capacity of α‐MoO3 flowers for RhB, MB, and CV reaches up to 4974, 6217, and 3886 mg/m2, respectively. Additionally, this novel adsorbent can adapt to a wide pH range, maintaining the excellent capacity of 4774 and 4473 mg/m2 toward RhB at pH of 2.0 and 12.0. The α‐MoO3 flowers can also adsorb other organics, including MO, noroxin, and tetracycline hydrochloride. Moreover, the free‐standing α‐MoO3 flowers on a carbon cloth realize the adsorptive filtration for organics removal, which not only require no conditions and no energy consumption but also avoid secondary pollution to the water as compared to the powdery adsorbents.

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Section: Introductionmentioning

confidence: 99%

Self‐assembly of α‐MoO₃ flower as a highly effective organics adsorbent for water purification

Zhang

Liang

et al. 2018

J Am Ceram Soc

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“…With the rapid development of printing -dyeing industry, the amount of wastewater treatment is increasing [1,2]. Gradually, excess dyeing sludge production increased.…”

Section: Introductionmentioning

confidence: 99%

Ultrasonic Assisted Synthesis of Cationic Polyacrylamide and Its Dewatering performance evaluation

Li¹,

Yang²,

Shou³

et al. 2018

Proceedings of the 2017 3rd International Forum on Energy, Environment Science and Materials (IFEESM 2017)

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Abstract:In this study, an acid and alkali resistance cationic polyacrylamide flocculants (P(AM-MAPTAC)) was synthesized through copolymerization of acrylamide (AM) and methacrylamido propyl trimethyl ammonium chloride (MAPTAC) by innovative ultrasonic initiation technology. The structure and thermal decomposition property of the obtained polymer were observed through FTIR and TG/DSC measurements respectively. The dewatering performance of P(AM-MAPTAC) was also evaluated by measuring the supernatant residual turbidity (RT), moisture content of the filter cake (FCMC), and chemical oxygen demand (COD) removal rate of the sludge. The RT, FCMC, and COD reached 14.80 NTU, 83.72 %, and 66.8%, respectively, at 40 mg L −1 of P(AM-MAPTAC) and pH of 10.0. Furthermore, P (AM-MAPTAC) showed good acid and alkali resistance, and had better application value.

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“…15 Several methods have been developed for the removal of synthetic dyes from industrial wastewater to decrease their harmful health and environmental effects. The processes like filtration, 16,17 coagulation/ flocculation, 18,19 and adsorption [20][21][22][23][24] have been extensively used to remove dyes in waste water treatment plants. However, these processes do not completely eliminate the dyes and only transfer them from one source to another.…”

Section: Introductionmentioning

confidence: 99%

Removal of methylene blue from aqueous solution by electrophoretically deposited titania‐halloysite nanotubes coatings

2018

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Two‐component suspensions of titania and halloysite nanotubes (HNTs) were prepared in ethanol with 0.5 g/L (optimum concentration) of polyethyleneimine (PEI) and different wt% of HNTs. Kinetics of Electrophoretic deposition (EPD) decreased with increasing the HNTs content in suspensions due to their less mobility compared with titania particles. HNTs reinforced the microstructure of coatings and reduced or completely prevented from cracking during drying and heat‐treatment steps. Removal of methylene blue (MB) via adsorption by HNTs coatings was faster than its photocatalytic degradation by titania coating. Dispersion of HNTs (up to ≈30 wt%) in the matrix of titania resulted in the synergistic catalytic effect in MB removal. The synergistic effect was because of the shorter traveling distance of MB molecules adsorbed on HNTs toward the photocatalytic active site of titania particles in composite coatings. However, the synergistic effect was destroyed with increasing the HNTs content in coating. Difference between the amount of MB removed by titania and composite coatings increased at longer times (≥60 minutes). Mass transfer of MB adsorbed on HNTs toward the photocatalytic active sites of adjacent titania particles can compensate the decline in the mass transfer from solution at longer times.

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Modified bentonite adsorption of organic pollutants of dye wastewater

Cited by 309 publications

References 57 publications

Self‐assembly of α‐MoO₃ flower as a highly effective organics adsorbent for water purification

Self‐assembly of α‐MoO₃ flower as a highly effective organics adsorbent for water purification

Ultrasonic Assisted Synthesis of Cationic Polyacrylamide and Its Dewatering performance evaluation

Removal of methylene blue from aqueous solution by electrophoretically deposited titania‐halloysite nanotubes coatings

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Modified bentonite adsorption of organic pollutants of dye wastewater

Cited by 309 publications

References 57 publications

Self‐assembly of α‐MoO3 flower as a highly effective organics adsorbent for water purification

Self‐assembly of α‐MoO3 flower as a highly effective organics adsorbent for water purification

Ultrasonic Assisted Synthesis of Cationic Polyacrylamide and Its Dewatering performance evaluation

Removal of methylene blue from aqueous solution by electrophoretically deposited titania‐halloysite nanotubes coatings

Contact Info

Product

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Self‐assembly of α‐MoO₃ flower as a highly effective organics adsorbent for water purification

Self‐assembly of α‐MoO₃ flower as a highly effective organics adsorbent for water purification